Data Transfer from CAD Files | CAD import (option 42)
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HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2017
Defining the datum
The workpiece preset is not always located in a manner that lets
you machine the entire part. Therefore, the control has a function
with which you can define a new datum and a tilting operation. You
can also define the orientation of the coordinate system.
The datum with the orientation of the coordinate system can be
defined at the same positions as a preset.
Further information: "Setting a preset", page 330
The datum and its optional orientation can be inserted
as comments in the NC program by using the TRANS
DATUM AXIS function for the datum and the PLANE
VECTOR function for the orientation.
Selecting the datum on a single element
Select the mode for specifying the datum
Click the desired element with the mouse
The control indicates possible locations for the
datum on the selected element with stars.
Click the star you want to select as datum
Use the zoom function if the selected element is
too small
The control sets the preset symbol at the
selected location.
You can adjust the orientation of the coordinate
system, if required.
Further information: "Adjusting the orientation
of the coordinate system", page 333
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